Binocular telescope.



PATENTED MAY 5 R. STRAUBEL.

BINOCULAR TELESCOPE APPLIOATION FILED MAY 8, 1906.

now A WTW" F's W 1 1) E it to .ss @ln FlilEe RUB Ll STRAUBEL. OF MESA, GERMANY, ASSIGNOR- TO THE FIRM OF CARL ZEISS, Ol .HQNA,

GERMABI Y.

IBINQJULAR TELIES'JQPE.

Specification of Letters Patent.

Zstented May 5, 1908.

Application i llEil May 8, 1%6. Serial 1%. 315,301.

it known that l, lhnoipn STRAUBEL,

liOOi/i i of philosophy, a citizen of tho Gcrznm Empire, and residing at Carl Zeissstmsse, ions, in the Growl Duchy of SsXeJTeimo-r, Gc nwny, lime invontsgl' a now mill useful Binocular 'lslosoopc, of which the iolloi'ing it spccilioot The; prsscnt invention consists in an inn.

1G piovcinont on a hii'ioculai' telescope LllS- ClOSSLl the l iitccl, States Patent" No. 'lliis lssoopo well-known this!) by is in th main :3 lnnizonta-l toletubes are cxtonrletl horizontally, so that the plan-es which inn (lotci :opc if the entrance ocular 180, but also a inglc tunes are nearly Minot the sold angle is 30. nod by the n oiihoz'icco. nppiccioticm" of fined in v 25 int i the axis of t.

second time, when the ;c socniod by tl 4 a 1" HAW 17 f l ufi ljolul is-tnc .ossiint; o sciYations li'om behind some ohi Colic-lies shove the limo. the

til? resent invention, these i 3A1 ho IiifiLl-E simultane usly, iittivcly, lioctive, it it slightly of both mii'sntngos ohsoro o staclo and appreciation of allowed. This aoooinpli h" rangcmcnt oi the join cli with R3, clistsnoc 5st,," n produces an inclinotioii has to one another of about say from 70 to 120. l'loncc :gerstwc angular position. of the so inocli. unooular telescope lies betwecn the two operative angular positions of the original in- In order to make the binocular '7 s of being completely folded f 'Jion the hinge relatively slci'eo-tclcscopc, "whose n opoi otif c to the component tlescop es should still fulfil the condition, that when the (lislmico hetwecn the oculsrs is 65 inm the axis of tho hinge lies at the some siclc of the plane containing the lXQS 0t theoculars as the entrance axes.

in the anncxsil (lmw iw Figure 1 is a the plane containing the ocular axes b b as tin;- cnti'snce axes c c, the instrument can be comolstely folded together? as shown in Fig.

2. As will he seen iron! Fig. 1, onhancing the angle between the tithes will only pro-- duce too small diatom-slim ween the ocu lars, and diminishing this angle as 111 Fig, 2

only too large a, dist/silica. There exists only tlic' one operative position shown in Fig. l. fill'nit 1 claim its my invention, and desire to secuic by Letters Patent, is

1. ln :1 collapsible binocular telescope the combination, with two component telescopes having their, main tubes extending in a plane perpendicular to the direction of vision, of a hinge system enabling the oomponent telescopes to be rotated in the said plans relatively toosch other, such system lasing so located relatively to the component tclcscopss that a distanc of 65 mm between the ocular axes occurs onlyfwhen the plane determined by the. entrance axis and the ocular ms of one component forms an angle of from 79"; to 120 -with the corresponding plane of the other component, for the purpose sot'fortli in. tho specification.

As the g sas es Qf from 70 to 120 between the glans, deter- In testimony whereof I have signed my 011d 37, the hinge axis lies at the same side of Witnesses:

mined by the entrance axis an the ocular name to this specification in the presence of axis of one component, and the corres ondtwo subscribing witnesses. ing lane of the other component, an sec- RUDOLF STRAUBEL.

' the plane containing the ocular antes as the PAUL KRfiGER, entrance axes. FRITZ SANDER. 

